IGN reports that a handful of early PS4 owners scattered across the internet – including systems received by both IGN itself and Kotaku – seemed to have a fault with their HDMI port that prevented the console from outputting a reliable signal.

Sony Studios boss Shuhei Yoshida has said that Sony is investigating the issue, but that such reports should be considered as “isolated”.

Be assured we are investigating reported PS4 issues. The number is very small compared to shipped, we believe they are isolated incidents.

Any hardware launch will be accompanied by reports of problems, of course. However, as PS4 isn't officially launched in North America until tomorrow, it's logical to assume that the vast majority of consumers are yet to get their hands on the machine, which arguably could make the reports more worrying.

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